Climate change refer to the variation in the earth's global climate or in regional climates over time. It describes changes in the variability or average state of the atmosphere over time scales ranging from decades to millions of years. These changes can be caused by processes internal to the earth, external forces or, more recently, human activities. This encyclopaedia has been written with the aim of acquainting people with phenomenon of global climate change. Each of the four books in this series deal with different fact of the climate change, and cover it comprehensively. Cause of Climate Change, Dynamics of Forest Ecosystems, Terrestrial Ecosystems and Simultaneously of the effects of Climate Change are the books titles, which in themselves, define enough the particular issue dealt with in each book with comprehensive, argumentative and critical discussion of the matter, lucid in easy to follow language, and illustration to foster better understanding, this series, should prove to be of vast interest to those wishing to know more about global menace of climate change.